norm: add hg prompt (#6725)

themes/norm.zsh-theme

@@ -1,4 +1,7 @@
-PROMPT='%{$fg[yellow]%}λ %m %{$fg[green]%}%c %{$fg[yellow]%}→ $(git_prompt_info)%{$reset_color%}'
+PROMPT='%{$fg[yellow]%}λ %m %{$fg[green]%}%c %{$fg[yellow]%}→ $(git_prompt_info)$(hg_prompt_info)%{$reset_color%}'
 
 ZSH_THEME_GIT_PROMPT_PREFIX="λ %{$fg[blue]%}git %{$fg[red]%}"
 ZSH_THEME_GIT_PROMPT_SUFFIX="%{$fg[yellow]%} → %{$reset_color%}"
+ZSH_THEME_HG_PROMPT_PREFIX="λ %{$fg[blue]%}hg %{$fg[red]%}"
+ZSH_THEME_HG_PROMPT_SUFFIX="%{$fg[yellow]%} → %{$reset_color%}"
+